Metal working machine



June 2, 1931. KELLQGG 1,807,847

METAL WORKING MACHINE [XI -EXTOR.

,l TTORXE) '5.

June 2, 1931. KELLOGG 1,807,847

METAL WORKING MACHINE Filed June 1, 1926 5 Sheets-Sheet 2 :1 TTORNE) '0',

June 2, 1931. H. G. KELLOGG METAL WORKING MACHINE Filed June 1, 1926 5 Sheets-Sheet 3 A TTORXE) 'i [M E.\ TOR. 1%,, fizz June 2, 1931. H. G. KELLOGG METAL WORKING MACHINE Filed June 1926 5 Sheets-Sheet 4 A TTORNE YJ June 2, 1931. H. ca. KELLOGG 4 1,307,347

METAL WORKING MACHINE Filed June 1, 1926 5 Sheets-Sheet 5 Patented June 2, 1931 UNITED- STATES PAQTE-NTFWOFFICE HOMER G. KELLOGG, OF DETROIT, MICHIGAN, ASSTGNOR'TO MOTOR PRODUCTS GOR- IEORATION, OF DETROIT, MICHIGAN, A CORPORATION OF NEW YORK METAL WORKING MACHINE Application tiled .I'une 1,

Consistent with the present state of the art, this invention contemplates forming the molding strips by advancing a flat strip of metal or other suitable material through a series of forming rolls and guides to progressively change the cross sectional contour thereof. Combined with this the invention contemplates continuously delivering the finished molding strip to means for fashioning vthe same to a predetermined longitudinal contour and to automatically interrupt or stop the feeding-of the strip after a selected -length has been longitudinal fashioned whereby the previously fashioned strip may be severed from the continuous strip and another longitudinal fashioning operation commenced.

The several objects, advantages and novel details of construction of the invention will be made more apparent as this description proceeds especially when considered in connection with the accompanying drawings wherein Figure 1 is a fragmentary side elevation of a machine constructed in accordance with this invention.

Figure 2 is a fragmentary top plan view of the structure illustrated in Figure 1.

Figure 3 is an end elevation of the structure illustrated in Figure 1.

Figure 4 is a diagrammatic side elevation of the rolls and Figures 5 to 15 are fragmentary views of portions of the successive sets of rolls from the front to the rear of the machine.

Referring now particularly to the drawings wherein like reference characters indicate like parts, it will be noted that reference character indicates the bed or base of the machine upon which are mounted a series of sets of driven rolls which advance a flat metallic strip or ribbon and during this advancement, fashions the same to a predetermined cross sectional contour. The machine comprises seven sets of rolls provided with 1926. Serial No. 112,978.

horizontal axes and numbered 11, 12, 13, 14, 15,16, 17, all of which are driven in timed relation to each other by means such as a series of intermeshing gears extendin longitudinally of the machine at one side t ereof. Ar-

ranged between the sets of rolls 11 and 12 and between the sets of rolls 12 and 13 are forming rolls 19 and 20 having vertical axes. Arranged between rolls 13 and 14 is the set of rolls 21 comprising a pair 'having vertical axes and a cooperating roll having a horizontal axis while between the rolls 16 and 17 is another set of three rolls 22 similar to set 21. The set of rolls 17 are not only forming rolls but are also guide rolls functioning in a manner to be more fully hereafter referred to.

The evolution of the stock to be formed is illustrated in Figures 5 to from which it will be noted that the stock strip 23 passing between the first set of rolls 11 is bent from a flat strip into a cross sectional contour including an upwardly extending projection or rib 24 and side flanges 25 and 26. Between the rolls 11 and 12 the strip 23 is engaged by the rolls 19 to further shape the same and in pas-sing through the set of rolls 12 the flange 26' has imparted thereto bends of a sharper angularity. The set of rolls are arranged between the rolls 12 and 13 while the rolls 13 operate upon the strip to alter the contour of the central rib or depression 24 and to bend the portions 27 and 28 of the strip out of their substantially horizontal position in an upward direction. The set of rolls 21 operates further upon the flanges and 26 of the strip while rolls 14 operate further upon the portions 27 and 28 bending the same still further out of their horizontal position. The rolls 15 bend the flange portion 26 downwardlv while the set 16 bends this flange to a position where the flange 25 is forced into overlapping position therewith. As the stock strip moves between the set of rolls 22 the flanges 25 and 26 are forced more tightly into inter-engaging relation and the vertical sides of the channel are forced more accurately into a position perpendicularly with the base of the channel. The rolls 17 engage the strip to impart'the final desired cross sectional c011- t-our thereto.

Mounted upon the machine between rolls 14 and 15 is a bracket 29 constituting an anchor for a flexible strip 30 constituting a plug around which the molding strip is subsequently bent by the rolls 15, 16, 17 and 22 to thereby prevent deformation of the strip during bending. This plug is of suflicient length as to extend adjacent the centers of the pair of uide rolls 18 whereupon deformation of tfie strip during bending is prevented. Inasmuch as the strip or plug is longitudinally flexible, it will not interfere with the longitudinal fashioning of the strip yet to be described.

Mounted coincident with the upper guiding roll and upon a shaft 31 which may be the upper guide roll shaft, is a bell crank arm or lever 32, the shorter arm 33 of which has adjustably secured thereto, a bending block 34 provided with a slotted underside of a contour similar to the upper surface of the pro-fashioned strip. The forming block 34 is adjustably mounted by means of a transverse bolt 35 extending through an aperture 36 in the arm 33, a set screw 37 being threaded into the arm 33 perpendicular to the set screw 35 for assisting in holding the bolt 35 in its adjusted position in the aperture 36.

The other end, of the bell crank lever 32 extends in an upward direction and is provided with a substantially horizontally arranged end 38 for engagement with a rotatin cam 39 mounted on a shaft 40. This cam is glriven by means of a gear 41 meshing with and driven in timed relation to the series of gears employed for driving the forming rolls. A rotation of, the cam 39 causes an oscillation of the bending arm 32 and as the bending block 34 has a bearing engagement with the molding strip as it emerges from between the rolls 18, the longitudinal contour of the molding strip will be fashioned in accordance with the movement of the bending block.

A function of the invention is to intercept or stop the advance of the molding strip after a length of the molding strip has been fashioned to a predetermined longitudinal contour. The purpose of this is to permit the length which has been previously fashioned to the desired longitudinal contour to be severed from the main strip whereby prefashioned stri s of the desired length may be successively 0 tained. For this purpose an automatic stop mechanism is provided which operates, in the present instance, upon each complete rotation of the cam 39*.

The reference character 42 indicates the clutch lever of the machine which is connected by means of a rod 43 to a clutch not shown, this lever being connected to a vertically extending rod 44 mounted upon the frame of the machine. Secured to the upper end of rod 44 is a short lever 45 adapted to be rocked from the full line position shown in Figure 3 to the dotted line, position shown in this fi ure when the clutch lever is moved from o to on position for starting the machine. As this rocking lever moves to its dotted line position it rocks a dog lever 46 about its pivot 47 against the action of spring 48 whereby the end of rock lever 45 is positioned past the end of dog lever 46 which is returned to a position preventing a return movement of rock lever 45. The parts 42, 43 and 45 tend to move from their dotted line to their full line position under the influence of a spring 49. Hence it will be seen that the clutch lever may be moved and held in its on position against the tension of spring 49 by means of the dog lever 46.

Pro ecting from the adjacent face of cam 39 is a cam lug or projection 50 which, just prior to the completion of the rotation of the cam 39, engages the adjacent end of the dog lever 46 to rock the same about its pivot 47 to move the other end thereof out of the path of rock lever 45 whereupon the spring 49 will move the clutch lever to its full line position wherein the clutch is disengaged and as a result the machine is stopped. This stops the advance movement of the molding strip and the rotation of the cam and as the parts are all operated in timed relation, a strip of molding of predetermined length has been delivered through the guide rolls 18 past the bending block 34 with the result that its longitudinal contour has been fashioned in accordance with the oscillation of the bending arm by the cam 39. Thereupon the saw or other suitable severing device A is moved transversely across the path of the strip whereupon it is severed along the line C to produce the molding strip indicated in dotted lines at S which, as mentioned, has been fashioned to a predetermined transverse and longitudinal contour and severed to the -desired length. The desired length is accurately obtained by mounting the severing device in fixed position with reference to the end of the machine.

The guide rolls 17 cooperate to hold the moldlng strip against lateral or vertical displacement and constitute the center about which the longitudinal bending takes place. Thus, the longitudinal fashioning of the strip may be accurately accomplished.

servation is made to make such alterations in the details of construction and arrangement of parts as may come within the purview of the accompanying claims.

What I claim as my invention is:

1. In a machine of the character described. the combination with means for fashioning to a predetermined cross-sectional contour and for advancing a predetermined length of molding strip, of means for fashioning said strip to a predetermined variable longitudinal contour.

2. The combination with means for advaneing a molding strip or the like, of means for imparting a predetermined longitudinal contour to a section thereof and means for stopping the advance of the strip operable by the operation of said contour imparting means.

3. The combination with means for advancing'a molding strip, of means for imparting a predetermined longitudinal contour to a section thereof and means for interrupting the advance of the strip operable by said contour imparting operation.

4. The combination with means for advancing a molding strip, of means for longitudinally fashioning said strip including a rotating cam driven in timed relation to and by said advancing means and means operated by said cam upon each rotation thereof for stopping said advancing means.

5. The combination with means for advancing a molding strip, of means for longitudinally fashioning said strip including a cam member and means operated by the latter for interrupting the advance of the strip after each operation of the cam member.

6. The combination with means for advancing a molding strip, of means for longitudinally fashioning said strip including a rotatable cam member and means operated by said cam member upon the completion of each rotation thereof for stopping said strip advancing mechanism.

7. The combination with means for advancing a. molding strip, of an oseillatable strip-fashioning arm and means for oscillating said arm for imparting a predetermined longitudinal contour to said strip, and

means interrupting said advancing means and oscillatable arm at predetermined intervals.

8. In a machine of the character described, the combination with means for fashioning to a predetermined cross-sectional contour and for advancing a predetermined length of molding strip, of means for fashioning said strip to, a predetermined longitudinal contour and means arranged in fixed relation to the delivery end of said machine for severing the predetermined length of strip from the remainder.

9. The combination with means for advancing a molding strip, of an oscillatable arm for longitudinally fashioning said strip and a rotatable cam operating in timed relation to said advancing means for operating said arm and means operable by said cam for periodically stopping the advance of the said strip.

10. The combination with means for advancing a molding strip, of a guide through which said strip is delivered and a bending block moving about a. center coincident with said guide for imparting to the strip a predetermined longitudinal contour.

11. The combination with means for ad- 13. In a machine of the character described, the combination with means for fashioning to a predetermined cross-sectional contour and for advancing a predetermined length of molding strip, of means for fashioning said strip to a predetermined longitudinal contour and a flexible shape-retaining plug about which said strip is fashioned.

14. The combination with a plurality of feed rollers, means for transversely fashioning a molding strip and means for fashioning the said strip to a predetermined longitudinal contour, of means for periodically stopping the rotation of the said feed rollers to check the advance of the saidmolding strip.

15. The combination with means for transversely fashioning a molding strip and a plurality of rotatable feed rollers for advancing said molding strip, of means for fashioning the strip to a predetermined longitudinal contour and means operable in timed relation to the rotation of the said feed rollers for periodically stopping the rotation of the feed rollers and the operation of said fashioning means.

16. In combination means for transversely fashioning and advancing a molding strip, means for subsequently fashioning the said prefashioned strip to a predetermined variable longitudinal contour and means for periodically stopping the advance of the said strip.

17. The combination with means for advancing and longitudinally fashioning a molding strip, of means operated by said fashioning means for interrupting the advapcing movement at predetermined interva s.

18. In a machine of the character described, the combination with means for advancing a predetermined length of molding strip, of means for fashioning said strip to a predetermined longitudinal contour, means operated by the fashioning'means for interrupting the advancing movement of the strip .and

.means operable duringaetuation of said last mentioned means to stop advancement of the strip for severing the predetermined length of strip from the remainder..

19. In a machine of the character described, the combination with means including a roll i'or advancing, a length of molding strip, of means including an oscillatable arm engageable with the strip beyond the said roll for bending predetermined spaced portions of the strip about the latter.

20. In a machine of the character described, the combination with means for advancing a length of molding strip including a guide roll for the molding strip, of means other than said advancing means operable at predetermined intervals to bend said strip about the guide r011.

In testimony whereof I aifix my signature HOMER G. KELLOGG. 

